Just some fun with melody generators, shift registers, ring mod and pitch tracking. Sort of taking everything and throwing it together to see if something interesting happens. I probably should have cut the length down a bit...

I've only just got round to listening/watching these posts (I had to be in a patient mood because, as you say, they are quite long!). Really like some of the sounds that you're getting. I'm building a lunetta at the moment (I will post very soon - I keep saying that).

Draal wrote:

Super build there .

Ditto.

Just wondered which circuits you've used for pitch tracking (a 4046-based circuit?) and the shift registers. I have lots of schematics in my collection, but I'm not sure which ones to try.

The pitch tracker can vary pretty wildly depending on the manufacturer you use for the chips. I don't quite get the laser bloops that some people do, but I do get a nice texture of gurgles. I'm planning on building another one using a different source for the 4046 and seeing what happens.

I suspect that tweaking the caps will lead to some pretty dramatic changes in the behavior. (You must build a pitch tracker; I can't recommend it enough).

I only have one bit hooked up. I wasn't sure how to seed the bits going into the shift register, so I added a push button going from hot to one of the legs of the XOR input. That effectively gives me a bit toggle that I can use to seed the shift register as it starts or to tweak it when it runs.

I think using an XNOR instead of an XOR may handle this problem on its own; but I've decided that I like the manual tweaking.

I made two outputs for the "random" bits. One is just like it's seen in the emSynth schematic. The other ANDs the bit with the clock; that would give a pulse output. This could be fun if combined with the drum circuits found here: http://electro-music.com/forum/topic-52786.html

The eventual plan is to create four of these using the various XOR connections in the emSynth version. That should provide a source for 4 bit random numbers that could be used for all sorts of things.

The pitch tracker can vary pretty wildly depending on the manufacturer you use for the chips. I don't quite get the laser bloops that some people do, but I do get a nice texture of gurgles. I'm planning on building another one using a different source for the 4046 and seeing what happens.

Hi aw, try unplugging your ground connection to your 4046, I did that with my CD4046BE and suddenly the lazer sweeps came on! very strange...!_________________www.dogenigt.com

Everything should be made as simple as possible, but no simpler. - Albert Einstein

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